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Título: | Use of Al2O3 in an automated on-line pre-concentration system for determination of cadmium(II) by FAAS. |
Autor(es): | Souza, Érica Silva Martins, Amarildo Otavio Fajardo, Humberto Vieira Probst, Luiz Fernando Dias Carasek, Eduardo |
Palavras-chave: | Alumina Pre-concentration Cadmium(II) Flame atomic absorption spectrometry |
Data do documento: | 2008 |
Referência: | SOUZA, E. S. et al. Use of Al2O3 in an automated on-line pre-concentration system for determination of cadmium(II) by FAAS. Journal of Hazardous Materials, v. 150, p. 328-334, 2008. Disponível em: <http://www.sciencedirect.com/science/article/pii/S030438940700605X>. Acesso em: 02 fev. 2015. |
Resumo: | This paper presents the development of an on-line pre-concentration system to determine cadmium(II) in aqueous samples. The analyte was trapped in a mini-column filled with Al2O3 in the form of macro-spheres obtained by the mixture of Al(NO3)3•9H2Oaq and chitosan dissolved in acetic acid. The mixture was dropped into an NH4OH aqueous solution under rigorous agitation using a peristaltic pump, the macro-spheres were separated from alkaline solution and dried, and finally were submitted to thermal treatment. The pre-concentration system was linear between 1.0 and 100 _gL−1, with a linearity of 0.999, sensitivity of 3.58×10−3 L_g−1 and enrichment factor of 21.9. The limits of detection and quantification were 0.08 _gL−1 and 0.28 _gL−1, respectively. The repeatability was between 2.6 and 5.9%. Recovery tests were carried out with a real aqueous sample. |
URI: | http://www.repositorio.ufop.br/handle/123456789/4963 |
DOI: | https://doi.org/10.1016/j.jhazmat.2007.04.114 |
ISSN: | 0304-3894 |
Licença: | O periódico Journal of Hazardous Materials concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3580760578368. |
Aparece nas coleções: | DEQUI - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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ARTIGO_UseAlO3Automated.pdf | 885,8 kB | Adobe PDF | Visualizar/Abrir |
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